package com.itinsys.enma.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

/**
 * Servlet Filter implementation class ExplorerControl
 */

public class BrowserControl implements Filter {

    /**
     * Default constructor. 
     */
    public BrowserControl() {
    }

	/**
	 * @see Filter#destroy()
	 */
	public void destroy() {
	}

	/**
	 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
	 */
	public void doFilter(ServletRequest request, ServletResponse response, 	FilterChain chain) throws IOException, ServletException {

		//String path = ((HttpServletRequest) request).getServletPath();
		String browser = ((HttpServletRequest) request).getHeader("User-Agent");

		if (browser.contains("Firefox") || browser.contains("Chrome")) {
			chain.doFilter(request, response);
		} else {
			RequestDispatcher rd = request.getRequestDispatcher("/incompatible");
			rd.forward(request, response);
		}
	}

	/**
	 * @see Filter#init(FilterConfig)
	 */
	public void init(FilterConfig fConfig) throws ServletException {

	}

}
